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Ainat [17]
3 years ago
8

There are 9 boys and 11 girls in a math class. Which ratios compare the number of girls to the number of

Mathematics
2 answers:
igor_vitrenko [27]3 years ago
4 0
9:11, 9/11 are the only ones because girls are first
astraxan [27]3 years ago
3 0

Answer:

b & e

Step-by-step explanation:

tell me if I am right :)

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Identify a possible first step using the elimination method to solve the system and then find the solution to the system.
olchik [2.2K]

Answer:x = 1

y = 1

Step-by-step explanation:

The given system of simultaneous equations is expressed as

3x - 5y = - 2 - - - - - - - - - - - - 1

2x + y = 3 - - - - - - - - - - - - - 2

The first step is to decide on which variable to eliminate. Let us eliminate x. Then we would multiply both rows by numbers which would make the coefficients of x to be equal in both rows.

Multiplying equation 1 by 2 and equation 2 by 3, it becomes

6x - 10y = - 4

6x + 3y = 9

Subtracting, it becomes

- 13y = - 13

y = - 13/- 13 = 1

The next step is to substitute y = 1 into any of the equations to determine x.

Substituting y = 1 into equation 2, it becomes

2x + 1 = 3

2x = 3 - 1 = 2

x = 2/2 = 1

8 0
3 years ago
Help me please I just need math and that's all for math
Sliva [168]
1. 3 1/4
2.9 1/2 hope it helped
5 0
3 years ago
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Find the distance between these two lines: 4x+3y=7 and 4x+3y=27
Alex73 [517]
There is no distance since they are the same exact number.
4 0
3 years ago
Describe how to find all the points on a baseball field that are equidistant from second base and third base
BlackZzzverrR [31]
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8 0
3 years ago
Measuring the speed of sound in the ocean is an important part of marine research. One application is the study of climate chang
dalvyx [7]

Answer:

A linear formula for S as a function of D is S=17D+1534

Step-by-step explanation:

We are supposed to find a linear formula for S as a function of D.

Equation of line : y = mx+c

We are given that At the surface, the speed of sound is 1534 meters per second.

c = 1534

We are given that for each increase in depth by 1 km, the speed increases by 17 m/s

So, Slope = m = 17

Substitute the values in equation

y=17x+1534

x denotes depth

y denotes speed

We are given that Use D for depth and S for the speed of sound

So, S=17D+1534

Hence a linear formula for S as a function of D is S=17D+1534

7 0
3 years ago
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